Malicious PDF — malware analysis report

Static analysis result for SHA-256 be38a87e006a9d5a…

MALICIOUS

PDF

80.5 KB Created: 2021-03-21 23:17:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b34b0ca24ed1b7d4f30b4ab64018f4b7 SHA-1: 8abc274f5cbafc49eb564b9f82744422c08e5e2d SHA-256: be38a87e006a9d5a6c1412511e2fab6e70f54affd296e85e9439b80519d4cfd9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jottigo.ru/aws?utm_term=ejercicios+resueltos+de+razones+trigonometricas+de+angulos+agudos+pdf PDF link annotation
    • https://cdn.sqhk.co/sifajoxojif/iiORsgj/centipede_arcade_game_with_riser.pdfIn PDF document text
    • http://test123test.xyz/download_apk_smooth_action_cam_slow_mo_proh4hps.pdfIn PDF document text
    • http://bajexubazewa.iblogger.org/34996184784.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/icEhdgi/66644373876.pdfIn PDF document text
    • http://hotsales-com.xyz/dijagoned279b.pdfIn PDF document text
    • http://eslivdrug.space/tuvujulagerapelisefmiutd.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tofizo/what_are_traditional_values.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1549a7a-b4c6-4df3-85be-9085b096233f/porusosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/def87b1a-0bb4-4eb3-815c-e8a5f1472a26/epic_emr_system_demo.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/mudomalokagir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0da065d5-b0b2-47b3-beb9-319ecf3362d7/the_inquisition_summoner_read_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bac2eef1-b44e-4468-8fe3-85d7ae3f3a4c/66871239705.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/burlington_books_a_connecticut_yankee_in_king_arthurs_court.pdfIn PDF document text
    • http://jidabalelibixu.rf.gd/archeage_unchained_leveling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b40f4b23-d663-4c25-8d5f-fb5c9c471162/whats_the_difference_between_g4_and_g5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3ba0fd8-77b1-48eb-8de7-479e97c7665c/megugakixilek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43fe0f1d-209a-4f6b-be61-9782f93791e5/ge_over_the_range_microwave_oven_light_bulb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31301a46-ce6f-4259-b557-5d67e9fd93ba/joxemi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA73 2340 bytes
SHA-256: 995213415be1eafe0905be62ed11b5ee8eee3f05847c7b5f71fbdf9ba9115970
font_01_sfnt_off0000f4cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CC 5560 bytes
SHA-256: 0cd26e86ad84fc8830d28a0ba840d38f62e32be338a8aae2afac21570d638628
font_02_sfnt_off000107b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B1 13104 bytes
SHA-256: b8e36b4f5182e8388404c9c1a5c51f21b890a551248888d65e1eb42c4b16ca20

Open this report in the interactive analyzer, or submit your own file for analysis.